Texas Sun Showdown Half Marathon, Relay & 5k 2026

The Texas Sun Showdown begins at McAllister Park-Pavilion #2 in San Antonio, Texas, offering three running options: a 21.1 km half marathon, a team relay, or a solo 5K. This is a San Antonio Road Runners event, and the half marathon has a 4-hour time limit for participants. The race emphasizes its Texas theme. Finishers receive a Texas medal and a Texas-themed shirt. Relay teams are encouraged to wear matching shirts or costumes, and the post-race food includes Texas barbecue. As the 3rd Annual Texas Sun Showdown, the event's character is shaped by local club enthusiasm, team involvement, and a relaxed summer-race atmosphere in San Antonio.